Blue Coat Systems Appliance Trim Kit Blue Coat Systems SG Appliance Manual De Usuario
Chapter 2: Monitoring the SG Appliance
25
Health Monitoring Example
The following picture shows an example. The lower horizontal line represents the
Warning threshold; the upper horizontal line is the Critical threshold. Note how they
divide the graph into bands associated with each of the three possible states. Assume both
thresholds have intervals of 20 seconds, and that the metric is currently in the OK state.
Warning threshold; the upper horizontal line is the Critical threshold. Note how they
divide the graph into bands associated with each of the three possible states. Assume both
thresholds have intervals of 20 seconds, and that the metric is currently in the OK state.
1.
At time 0, the monitored value crosses the Warning threshold. No transition occurs
yet. Later, at time 10, it crosses the critical threshold. Still, no state change occurs,
because the threshold interval has not elapsed.
yet. Later, at time 10, it crosses the critical threshold. Still, no state change occurs,
because the threshold interval has not elapsed.
2.
At time 20, the value has been above the warning threshold for 20 seconds--the
specified interval. The state of the metric now changes to Warning, and a notification
is sent. Note that even though the metric is currently in the critical range, the State is
still Warning, because the value has not exceeded the Critical threshold long enough
to trigger a transition to Critical.
specified interval. The state of the metric now changes to Warning, and a notification
is sent. Note that even though the metric is currently in the critical range, the State is
still Warning, because the value has not exceeded the Critical threshold long enough
to trigger a transition to Critical.
3.
At time 25, the value drops below the Critical threshold, having been above it for only
15 seconds. The state remains at Warning.
15 seconds. The state remains at Warning.
4.
At time 30, it drops below the Warning threshold. Again the state does not change. If
the value remains below the warning threshold until time 50, then the state will
change back to OK.
the value remains below the warning threshold until time 50, then the state will
change back to OK.
Figure 2-2. Relationship between the threshold value and threshold interval
About License Expiration Metrics
The threshold values for license expiration metrics are set in days until expiration. In this
context, a "critical" threshold indicates that license expiration is imminent. This is the only
configurable metric in which the Critical threshold value should be smaller than the
Warning threshold value. For example, if you set the Warning threshold to 45, an alert is
sent when there are 45 days remaining in the license period. The Critical threshold would
be less than 45 days, for example 5 days.
context, a "critical" threshold indicates that license expiration is imminent. This is the only
configurable metric in which the Critical threshold value should be smaller than the
Warning threshold value. For example, if you set the Warning threshold to 45, an alert is
sent when there are 45 days remaining in the license period. The Critical threshold would
be less than 45 days, for example 5 days.
Time
20 seconds above the Warning threshold a Warning notification is sent
0 5 10
15
20
25 30
35
40
45 50
55
60
Va
lu
e
OK W
A
RRNING
CRITICAL